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Glaucoma: Overview

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...

Open Angle Glaucoma: Treatment

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...

Angle Closure Glaucoma: Treatment

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...

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Related Experiment Video

Updated: Apr 27, 2026

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis

Published on: June 3, 2018

Differential gene expression in glaucoma.

Tatjana C Jakobs¹

¹Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts 02114.

Cold Spring Harbor Perspectives in Medicine

|July 3, 2014

Summary

This summary is machine-generated.

Genome-wide studies reveal key gene expression changes in glaucoma, particularly in inflammation and immunity pathways. Understanding these genetic factors is crucial for unraveling the complex pathogenesis of this vision-threatening disease.

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Area of Science:

Ophthalmology
Genetics
Immunology

Background:

Glaucoma involves retinal ganglion cell degeneration, with age and elevated intraocular pressure (IOP) as primary risk factors.
The precise pathogenesis of glaucoma remains incompletely understood, despite known risk factors.

Purpose of the Study:

To review and synthesize findings from recent genome-wide expression studies in glaucoma.
To identify commonalities and differences in gene expression patterns across various ocular tissues in glaucoma.

Main Methods:

Analysis of differential gene expression using genome-wide microarray screening.
Utilizing animal models of glaucoma to study disease pathogenesis.
Comparative analysis of findings from multiple genome-wide expression studies.

Main Results:

Consistent differential regulation of genes associated with inflammation and immunity was observed.
Key pathways identified include the complement system, transforming growth factor β (TGFβ), and tumor necrosis factor α (TNFα).
Other significantly altered genes relate to extracellular matrix, cell-matrix interactions, cell cycle, and the endothelin system.

Conclusions:

Genome-wide expression studies highlight the significant role of immune and inflammatory responses in glaucoma pathogenesis.
Identifying specific gene expression alterations provides insights into the molecular mechanisms underlying retinal ganglion cell death.
Further research into these identified genes and pathways may lead to novel therapeutic targets for glaucoma.